Your Reliable Partner and Insulation Piercing Connector Manufacturer in China
Rayphen is your reliable manufacturer and supplier in China. We provide an insulation piercing connector for more than 14 years.

Why Rayphen Insulation Piercing Connector

  • Indonesia PT PLN Persero
  • Vietnam EVN
  • Turkey TEIAŞ
  • Sri Lanka CEB
  • Spain RED
  • South Africa Eskom
  • poland PSE
  • Philippines NGCP
  • Pakistan Nepra
  • Malaysia TNB

Quality Insulation Piercing Connector to Support Your Business

Rayphen will provide you with our trusted insulation piercing connector for your applications. Check it out!

JJC Insulation Piercing Connectors
JJC Insulation Piercing Connectors

Depending on your specific applications, Rayphen offers insulation piercing connectors with different cross-sections. And Rayphen insulation piercing connectors are strictly according to EN 50483-4, NFC 33-020, NFC 33-004.

TTD Insulation Piercing Tap Connectors
TTD Insulation Piercing Tap Connectors

Rayphen TTD insulation piercing connectors have a good waterproof effect, it is passed withstand a voltage of 6kV underwater no breakdown. For your special requirement, Just tell us, Our professional technical team will offer you a customized insulation piercing connectors solution in 24 hours.

JJCD 1kV IPC Connectors
JJCD 1kV IPC Connectors

Rayphen 1kV IPC connector is manufactured low voltage aerial bundled cable to use. As a professional IPC connector manufacturer. Rayphen is built to meet customer needs every day. Rayphen has been focused on IPC connector design, development, and manufacturing.

JJC 10kV Piercing Connector
JJC 10kV Piercing Connector

JJC 10kV piercing connector manufactured by Rayphen is simple, safe, and quick installation. Corrosion-resistant, firm and durable. Special shear head design to ensure the mechanical strength of the conductor. You can rely on us for your piercing connector needs.

JJC 20kV Insulation Piercing Clamp
JJC 20kV Insulation Piercing Clamp

Rayphen JJC 20kV insulation piercing clamp is made by high-quality material. The contact teeth are made of electrolytic metal sheet with excellent conductivity and high tensile strength. and the shell is made of high strength insulating material that flame retardant and anti-aging. so Rayphen is always your best choice.

JBC Insulation Piercing Tap
JBC Insulation Piercing Tap

Rayphen insulation piercing tap is widely used for building distribution system, overhead transmission lines, street lighting, civil housing, etc. And we have a wide range of insulation piercing tap for your choice.

CD ABC Cable Connector
CD ABC Cable Connector

Rayphen CD ABC cable connector is suitable for low voltage insulation lines. They are made up of weather-resistant glass fiber reinforced polymer, copper, aluminum, and steel. You can purchase an ABC cable connector at a very competitive price.

More Details about Rayphen Insulation Piercing Connector

TypeEquivalent modelMain Line

Section  (mm2)

Branch Section (mm2)Norminal




Weight (g)Piercing Depth (mm)Bolt Quantity
RF4-150          (old design)JJC-6(35)50-150(35)50-15031650×61×1002193-41
RF240            (old design)JJC-895-24095-24042583×130×13010204-52



TypeMain line


Branch line


Max current


BoltTorque nut
NumberH (mm²)



TypeApplicable Voltage (kV)Applicable Conductor (mm2)Main Dimensions (mm)Norminal


Bolt Quantity
Piercing Depth (mm)



TypeApplicable Voltage (kV)Applicable Conductor (mm2)Main Dimensions (mm)Norminal


Bolt Quantity
Piercing Depth (mm)



TypeApplicable Voltage (kV)Applicable Conductor (mm2)Main Dimensions (mm)Norminal


Bolt Quantity
Piercing Depth (mm)



TypeApplicable conductor range mm2Bolts qty.
Main line section mm2Branch line section mm2

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Let Rayphen Help You Improve Your Business

Rayphen insulation piercing connector (IPC) provides you a convenient, fast, and reliable connecting method of overhead low voltage mains to service or other mains. They provide a fully sealed, waterproof connection.

You can easily install the Rayphen insulation piercing combined with excellent electrical, environmental, and mechanical characteristics. So, it will provide a connector capable of terminating aluminum or copper stranded conductors.

Rayphen insulation piercing tap is manufactured in different industrial applications. You can use an insulation piercing connector to achieve contact by simultaneously piercing the insulation on LV ABC conductors.

Sell to over 200 Global Clients

Rayphen Insulation Piercing Connector has been exported to over 200 global clients and installed to electric power project in the world.

Use quality raw materials

Rayphen Insulation Piercing Connector is manufactured with high-quality raw material.

14+ Years' Experience

Rayphen has over 14 years of Insulation Piercing Connector manufacturing experience.

Strict quality control

Insulation Piercing Connector manufactured by Rayphen is 100% strictly tested before shipment.

Rayphen Insulation Piercing Connector

Mostly, The IPC connector enables the jointing network and LV ABC connection conductor. Rayphen manufactures insulation piercing connector with great features:

  • Waterproof
  • Range taking
  • Accept copper conductor
  • Captive and flexible end caps
  • All components are solid and tight in place
  • Can be installed on energized main if not under load

Our wire piercing connector is tested and designed to fit the majority of types of cables. They are produced in accordance with the European Standard HD 626.

Rayphen insulation piercing connector is insulated with PVC, PE, or XLPE. You can always trust the quality of our insulation piercing connector. Because it is manufactured according to national specifications such as VDE, NFC, ESI, BS, as well as in accordance with CENELEC EN 50483-4.

Our insulation piercing connector is tested in order to verify reliable operation even in the harshest environments.

Additionally, Rayphen insulation piercing connector is designed for Installation from –20 °C up to +50 °C. They can withstand 6 kV in a 30 min water bath and can withstand to 6 kV after heavy weathering exposure.

If you looking for a certified wire piercing connector manufacturer and supplier, then you’ve come to the right place.

Rayphen insulation piercing connector manufacturing company is a professional wire piercing connector manufacturer and supplier in China for more than 14 years.

We will provide a high-class insulation piercing connector for each of our clients. Rayphen wire piercing connector suppliers have maintained good business relations with our clients with the assurance of health and safety.

You can purchase a wire piercing connector in single or bulk orders, back in stock notifications among others.

If you want a long-lasting business, then consider Rayphen manufacturing factory as your no.1 insulation piercing tap manufacturer, supplier, and distributor.

Contact us now!

 Insulation Piercing Connector FAQs-The Ultimate Guide


Insulation piercing connector (IPC) is familiar to electricians and those who deal in electrical appliances. It is a modern technology gadget that is used as a connector in different circuits.

Are you looking for a complete guide to learn everything about insulation piercing connectors? It is your success you reach us. It is the guide that includes all you want to know about Insulation piercing connectors before buying.

This includes features, uses, structure, cost, and installation procedure, besides so many other things that you should learn regarding insulation piercing connectors. Let’s dig in a little extra and get to know about the insulation piercing connector in detail.

Q1. What is Insulation Piercing Connector?

An Insulation piercing clamp is made of torque nut, piercing blade, high-strength bolt, gasket, reinforce shell, cable terminal cover (cap cover), and waterproof silicone grease.

The branch line end of the cable is placed into the waterproof end of the insulation piercing connector when you join the cable or want to branch it.

The socket wrench tightens the torque nut once you determine the location of mainline branching.

Meanwhile, the blade of the insulation piercing connector displaces the layer of insulation on the wire or cable and forms a connection with the conductor.

The gasket at the same time presses the cable at its pierced point.

The silicone grease overflows in the shell.

As soon as the torque reaches the required value, the mechanism of nut torque falls off, hence making a connection between the mainline and the branch line.

According to standard, electric effect and performance being waterproof reach the required conditions.

An insulation piercing connector is a swift connector that links two current leads together.

They are testing devices used for aerial bundled cables.

It removes the insulation material of the cables and makes its own way there to connect cables with conductors.

It contains a flip top and it allows the entry of low voltage wire to slide into one channel of the connector among its multiple channels.

The other wire is inserted just beside it in another channel.

When you close the flip top, the spikes are pressed into each other joining the wires.

There are different kinds of insulation piercing connectors for various purposes.

They are utilized for diagnostic purposes in the circuit where a terminal or main connection cannot reach.

They are easily available and are highly reliable to use in industries.

Insulation Piercing Connector                                                                    Insulation Piercing Connector

Q2. Can You Buy Insulation Piercing Connector in Different Sizes?

Yes, you can ask for different sizes of insulation piercing connectors.

They come in different shapes and sizes according to your need.

Rayphen provides you insulation piercing connectors in sizes ranging from 16mm2-240mm2.

Different sizes diversify the use of insulation piercing connectors.

Measure the size including length, width, and depth carefully before buying an insulation piercing connector.

That is how you will get a hand on the perfect size.

Various Sizes of Insulation Piercing Connectors                                                                            IPC of Different Sizes

These sizes are selected depending upon their application.

Q3. How Does an Insulation Piercing Connector Work?

The working principle of the insulation piercing connector is not complicated.

It pierces merely the insulation covering above the wires and gets itself attached there.

The piercing needles (single and multiple) are responsible for tearing off the insulation layers.

You just need to place the branch and mainline through an insulation piercing connector.

The remaining work will be done all by itself.

Once it connects with the cables, it allows electricity to flow smoothly and become capable for diagnostics.

Q4. What Features to Look in Insulation Piercing Connector Before Buying?

The key features of insulation piercing connectors are listed down below:

  • They are water-repelling.
  • Piercing teeth are made of brass, copper, or aluminum.
  • The nut and washers should be made exclusively of metals.
  • The shear head bolt must be of hot-dip galvanized moderate carbon steel or stainless steel.
  • All the pieces are tightly bound.
  • They have end caps that are flexible and secure.
  • The working temperature remains in the range of -55°C to +55°C.
  • The temperature for accurate installation is between -20°C to +55°C.
  • They bear different current loads.
  • Insulation piercing connectors have corrosion-free metal parts.
  • The torque force that is applied must be mentioned or specified.

Ask the supplier if these noteworthy features are available in their product.

If you get a positive reply, you can immediately buy an insulation piercing connector.

If no, immediately return the product and search for the right insulation piercing connector.

Rayphen supplies the best quality insulation piercing connectors regarding material, efficiency, and price range.

Q5. What are Different Types of Insulation Piercing Connectors?

There are different types of insulation piercing connectors based on different parameters.

The three most commonly available types are:

  1. According to current carrying capacity, Insulation piercing clamps have three types 1KV, 10KV, and 20KV
  2. According to the functionality, insulation piercing connectors are divided into fire insulation piercing clamps, lightening protection insulation piercing connectors, ordinary insulation piercing clamps, arc insulation piercing clamps, and electrical grounding insulation piercing clamps.
  3. There are basically three main types of insulation piercing connectors based on working capacity which are single phase, single phase having a fuse holder, multi tap having 4-5 branches

These types have different specifications and functions.

The design and construction of all three types of insulation piercing connectors are shown below.

Single Phase Insulation Piercing Connector                                                        Single Phase Insulation Piercing Connector

Single Phase Insulation Piercing Connector with Fuse Holder                                     Single Phase Insulation Piercing Connector with Fuse Holder

Multi Phase Insulation Piercing Connector Having Branches                                   Multi-Phase Insulation Piercing Connector Having Branches

The insulation piercing connector has two more types depending upon the screw number.

  • Single screw IPC
  • 2-screw IPC

The single screw is small and has only one bolt and nut.

Twice or two screwed IPC is a bit larger and has two screws.

The size of both screws in the 2-screw insulation piercing connector is the same.

However, if the size is not the same, a firm connection is impossible to achieve.

Insulation piercing connectors are ideal for low voltage circuits and are mostly used in overhead connections.

Q6. Which Type of Material is the Torque Nut of Insulation Piercing Connector Made of?

The torque nut (shear head bolt) of the insulation piercing connector is composed of hot-dip galvanized moderate carbon steel.

It could be made of stainless steel.

This specific material makes the insulation piercing connector corrosion free.

It allows maximum conductivity and great efficiency of working.

Q7. What are the Applications of Insulation Piercing Connector?

Insulation piercing connectors come in handy when you need to join two wires together.

They are exceptional in their application in certain systems like:

  • Overhead connections
  • The entry of low voltage wires
  • Branch connections
  • Street lamp systems
  • Earthing protection
  • T connections
  • Support of cables
  • Distribution of power in buildings

All these applications of insulation piercing connectors excellent connectors for electrical cables particularly aerial bundled cables.

Q8. How are Electrical Contacts Made Between Cables and Insulation Piercing Connector?

The teeth of the piercing must be composed of brass, copper or aluminum for a smooth yet strong connection.

For a secure connection, the frictional force or opposing force between cable and insulation piercing connector should be lower than 30μΩ.

Connections for single phase insulation piercing connectors require double teething for guaranteed safe links.

The width of the cable and piercing connector should be compatible with each other.

Always ensure the specifications needed for a safe and sound electrical connection.

Q9. How to Enhance the Effect of Piercing Teeth of Insulation Piercing Connector?

The teeth of the insulation piercing connector are be made of aluminum, copper, or it could be tin-plated.

To enhance its effect and working efficiency, make sure that the shape of teeth retains maximum water entry.

Once moisture enters the teeth of the insulation piercing connector, it starts getting oxidized.

The corrosion has a negative effect on the working mechanism of IPC.

If you see rusty IPC, apply grease all over the gadget.

It helps in reducing the corrosive effect.

Q10. How Contact Resistance Affects the Working of Insulation Piercing Connector?

The contact resistance has indirect relation with torque force applied during installation of insulation piercing connector.

Contact resistance rises with a decline in an applied torque.

However, it gets increased when the temperature is increased.

Installation angles during the procedure of installation also have a slight effect on contact resistance.

It appears that if the contact resistance is high, the insulation piercing connector does not work properly.

Hence, it has an indirect effect on the working of insulation piercing connector.

The more the value of contact resistance, the less is the functionality of the insulation piercing connector.

Q11. How Much an Insulation Piercing Connector Costs?

Insulation piercing connectors are available at different prices.

The price depends on the high or low quality of the manufacturing material, size, and maximum current support.

Rayphen has a vast range of insulation piercing connectors.

They are an affordable and high-quality product.

Make sure that the product you are getting has no fault before paying.

If you buy a faulty insulation piercing connector, it will affect reliability and performance.

Q12. Which Tools Do You Need During Insulation Piercing Connector Installation?

The installation of an insulation piercing connector is not complicated.

All you need is a socket wrench (spanner)

This tool tightens the nut of the insulation piercing connector to establish a good connection.

The size of the socket wrench should be in accordance with the small hex on the top of the piercing connector and not the large hex at the bottom.

You see, how conveniently an insulation piercing connector is installed.

Q13. How to Install Insulation Piercing Connector for AB Cable?

The steps for correct installation of insulation piercing connector are:

  • Hold the piercing connector and adjust its nut position properly.
  • Separate the cable bundle at one side.
  • Select one cable that is supposed to go into the piercing connector.
  • The face separator separates the cable.
  • Put the branch cable in the cap cover of the branch line.
  • Now you can install the main cable or line.
  • If the main wire is thick and has double insulation on it, pierce some of the insulating material from the connecting area.
  • Note that both the cables are correctly fit and ensure they are parallel to each other.
  • Manually tighten the screws with the help of your hand to correctly hold the clamp.
  • With a socket wrench, screw up the bolt with adequate force.
  • The part of the insulation piercing connector at its top breaks down.

Ensure enough, and specified torque is applied during installation.

For insulation piercing connectors of size equal to or less than 95mm2, the torque should be 20Nm.

For insulation piercing connectors of size more than 95mm2 but less than 150mm2, the applicable torque must be 30Nm.

The size of the bolts or nuts must be equal means both should be alike in dimensions for correct installation.

Now let us see how to install a 2-screw insulation piercing connector

  1. First of all, open the screw of wire connector to unclamp it.
  2. Now look for the groove specified for main wire and put the wire into it.
  3. Never use a knife ruler for twisting the wire.
  4. Make sure that the wire’s diameter is exactly according to the wire clamp.
  5. Now as you for the main wire, look for the specified groove for branch line and insert it into its slot.
  6. Through a socket wrench, tighten the bolts of both grooves.
  7. Remember not to use a simple wrench with open ends.
  8. The nuts should be bolted simultaneously and not turn wise.
  9. The process of installation will complete as soon as the torque nut breaks when the bolting strength is reached to the required value.

Q14. What Benefits do You Get from Using Insulation Piercing Connector?

There are multiple advantages of insulation piercing connectors.

  • Their installation procedure is relatively easy and simple.
  • Insulation piercing connectors are waterproof and have no effect of weather.
  • They make reliable and robust connections ensuring fewer power losses.
  • Insulation piercing connectors are robust and cost effective.
  • They can make connections with almost every cable, whether PVC coated or have PE insulation.
  • They quickly detect faults.
  • They do not disturb the circuit.
  • They have applications in different industries.
  • Insulation piercing connectors are easily available in the market.
  • Piercing connectors do not need many tools for proper installation procedure; only spanner and face separator do the work.
  • Their teeth are entirely made of copper or its alloy with tin hence good conductors.
  • Insulation piercing connectors require less maintenance.

As they have vast applications, insulation piercing connectors are reliable connectors for electrical connections.

Q15. On What Factors the Working Ability of Insulation Piercing Connector Depends?

The performance and reliable connection of insulation piercing connectors depend on these three factors.

  1. Puncture Depth

The safety of the insulation piercing clamp has a direct relation with the depth of the puncture.

Very shallow puncture effects the contact resistance making it very high.

This increase in the value of contact resistance ultimately raise the temperature of the wiring which leads to overheating and causing fire.

A puncture that is very deep will cause internal damage to the cable wires.

It will affect the safety and strength of the insulation piercing connector.

  1. High-quality piercing teeth

The quality of the piercing teeth has a lot to do with the reliability and safety of insulation piercing connector.

Piercing teeth must be made of copper alloy having multiple metal layers on it.

It has good current conductivity and better amperage conduction.

The hardness of the blade is generally between 5-8 Brinell hardness.

It means this hardness must be higher than usual blades used domestically. It will ensure reliable piercing of the wire’s insulation layer.

  1. Accurate design of torque nut

The insulation piercing torque nut is very imperative part of the gadget.

It is made with high precision and accuracy.

The manufacturing of torque nut is done by keeping various factors in mind.

The factors are precise testing, analyzing the construction of insulation piercing connector, functionality, torque calculation, and the whole structure of IPC.

A good quality accurate torque nut ensures a very calculated puncture effect.

Through this a reliable connection is made.

It also ensures the safety and strength of the cable.

Q16. Is PG Clamp Similar to Insulation Piercing Connector?

No, the insulation piercing connectors and PG clamps are not exactly similar gadgets.

Insulation piercing connectors pierce the cables for making a connection way to get connected to the cables.

Insulation piercing connectors are for diagnostic purposes and utilized during the testing of circuits.

On the contrary, PG clamps are connectors and are unable to pierce or strip off the insulating layer of the wire.

The wires simply pass through the PG clamps.

They are not applicable for testing electrical connections.

However, the PG clamps and insulation piercing connectors look alike in terms of having nuts and bolts, and both are connectors.

Q17. Is it Okay If You Reuse an Already Installed Insulation Piercing Connector?

No, insulation piercing connectors cannot be reused.

The main reason is that with usage, the tip of the insulation piercing connector gets blunt

Deformation in the sealing rubber of sleeves also appears with time.

When you uninstall the insulation piercing connector, the shape gets deformed.

This does not satisfy the purpose of proper piercing effect and joining wire together.

Q18. Is Insulation Piercing Connector Waterproof?

Yes, it is a massive advantage that insulation piercing connectors are waterproof.

It is their plus point and makes them perfect to use for overhead connections.

Companies have put the effort into making waterproof insulation piercing connectors through oxide inhibitor coating.

If the water gets inside the insulation piercing connector, corrosion appears and affects the reliability of the insulation piercing connector.

Q19. Is Weather Resistant Insulation Piercing Connector Available?

Yes, you can get perfectly weather-resistant insulation piercing connectors.

The efficiency of working depends on this property too.

If the metal parts (bolt) of the insulation piercing connector are corrosion free, it means it will 100% work best than the one having corrosion.

You can apply grease (oxide inhibitor) to piercing teeth for longevity.

Apply grease coating until it becomes visible to you.

Ensure that the grease you are applying is in accordance with the sealing of the gasket material.

It has zero effect on the working of the insulation piercing connector.

Do not apply too much grease to it.

Q20.Can You Connect Insulation Piercing Connector to Aluminum Wire?

Yes, insulation piercing connectors are safe for almost every kind of cable.

The cables could be of aluminum, copper, or another conductor material.

Whether the cables are single core or multicore, an insulation piercing connector is suitable for them.

It works best for aerial bundled cables but equally effective for all types as well.

Insulation piercing connectors are safe for both overhead connections and underground connections.

They are ideal for low and medium amperage but work great with high voltage as well.

Q21. Is it Okay to Use an Insulation Piercing Connector for Multicore Wires?

Yes, it is suggested safe to use an insulation piercing connector for multicore cables and wires.

Multi core wires are thick and strong.

Their insulation is also tough to tear off as compared to single insulated wires.

For such cables, you are required to pull off double insulation.

You can use insulation piercing connectors for multicore wires until they are extra flexible.

For extra flexible wires, insulation piercing connectors do not allow much reliable connection.

Q22. Can You Use Insulation Piercing Connectors for High Voltage Connections?

Yes, they can be used for high voltage connections.

They are able to conduct a current of high value such as 20kV.

They are safely used for connecting high voltage cables.

Ideally, they are preferred for low or medium voltage connections.

However, no limitation is generally seen for applying it to high voltage lines.

Q23. How Much Current Load is Bearable by Insulation Piercing Connector?

Insulation piercing connectors are capable of bearing varied current loads.

Their conductance range depends on how you are using them and for which application.

Rayphen insulation piercing connectors have a load-bearing range of 63 amperes to 20,000 amperes.

It means they are equally good for low and high voltage values.

Their nature makes them reliable to use for overhead and underground electrical connections.

However, they are ideal for low and medium voltage of electricity.

Q24. Can You Use Insulation Piercing Connector for Underground Connections?

Yes, you can use an insulation piercing connector for underground connections.

They are generally suitable for overhead connections or AB cables (aerial bundle).

However, you can always use them for high voltage too.

Insulation piercing connector works best for fewer voltage circuits where a smaller number of amperes flow.

Q25. Are Insulation Piercing Connectors Reliable?

Yes, insulation piercing connectors are 100% reliable connectors.

The strong connection and easy installation attract its users for different applications.

Less maintenance requirement is also one of its plus traits.

It is easy to tackle with and they are used for every cable type.

Companies prefer to utilize high quality insulating material for reliability and efficient working.

They are pretty simple to unmount.

In case of some unfortunate incident happens, you can easily unmount the insulation piercing connector.

Q26. What is the Effect of Heating on Insulation Piercing Connector When Power is Turned On?

When you turn on the power, the temperature of the circuit rises.

As insulation piercing connectors are connected within the circuits, they get heated up too.

They withstand a temperature range of -40°C to +55°C.

In case of the rise of temperature because of some issues in the line, the insulation piercing connector gets heated up beyond its limit.

It bursts or deforms the insulation piercing connector.

Q27. What is the Purpose of Sealing Gasket on Insulation Piercing Connector?

The sealing gasket ensures maximum water tightness around piercing teeth.

It is made of insulating materials and is highly flexible.

This type of sealing is made in such a way that it does not destruct the insulation of the conductor more than its piercing limit.

Q28. Do the Contact between Metal Conductor and Insulation Piercing Connector Safe?

Yes, the contact between the metal conductor and insulation piercing connector is reliable and safe.

The construction of an insulation piercing connector is made in such a way that ensures maximum safety between the connections.

It is wise not to use an insulation piercing connector on a conductor having no insulation on it.

Connecting it with a bare conductor will have serious consequences.

Q29. Can You Use Insulation Piercing Connector for Parallel Splices?

The design and construction limit the gadget to mainly work as taps.

However, you can make (to some extent) parallel splices too with insulation piercing connectors.

Insulation piercing connectors are applicable to non-tension connections.

Q30. Do Insulation Piercing Connectors Need Additional Cover for Protection?

No, the insulation piercing connectors do not need extra protection during and after the process of installation through covers or tapes.

The insulation piercing connector comes with an inbuilt insulation system.

That is why they do not need tapes for making them protected from outside conditions.

It is a plus feature of the insulation piercing connector because some other connectors do need covers for extra protection.


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